Machine for applying solder to pins



Oct. 23, 1928.

A. E. GIBSON MACHINE FOR APPLYING SOLDER T0 PINS Filed Sept. 24, 1924 2 Sheets-Sheet 1 Frau F Z G 3.

I/VVENTOA A/berf 5. 613650 4 e aw 1%1 25- Z 0mw 23,1928. 1,688,490 Y A. E. GIBSON MACHINE FOR APPLYING SOLDER T0 PINS Patented lOcL123, Y

ult mo-MAT PATENT QF Y E "ALB T 1 'srnsoiq, onsgxtmemnnn, P SXLYANIA, Ass 'qlqon wo THE DENTrsTS' sort ng ooMPA Y, AeoRPonAtr-mmr OF- NEW YORK.

. i MAen InE non ABBLYIN SOLDLER norms. I

; ppl a fi ds mmm ,924; was 13 5? My invention has foritsobject the attaiqh ment of solder to the ends; of; pins employed in the manufacture of artificialy teethwhere;

in the pins, are soldered to. anchoring means embedded in theporcelain of the tooth; benefits. to be derived from the present n- Vention being; the reduction-in labor and cost in assembling the-pins and solderin hei h chors before being subjected to, a solder'tusing temperature which insures the union of the pins and anchors.

The customary practice inthe mgnt faeture of artificial teeth is to first insertsmall cyline' dersof solder dipped ina suitable flux s'olug ti on and thereafterinserttheshank of a head- -.e.d pin, allowing itto rest upon the solder;

Upon fusing the solder the pin settles down into the anchor and becomes soldered thereto.

O je ti n to thi m t od Of P. hhdlh h om e ac that two dis t op ra ns with small. tweezers mustbe had, one for first handling the s lder .PhliiC-lfifi and hh O h r for handling the pins; and further, that as the solder particles are quite small and rounded, it isnot easy to select; and pick them up and therefore theoperation ihvolyes con;

siderable time of the operator. which is.

chargeable against the cost of production. IA further objection is tlli t LS-thepms loosely rest on the solder they 5 .1 HQ lways n up right position and hence upon fusing the solder they sometimes becomeattached to the anchors. in an objectionablyinclined position. These objections. are Wholly overcome-by providing solder attached to the ends of thepins V as a preliminary product, so that Whenpicking up the pin, tbe operatol alSQ picks up the attached solder; and when the p n-xylththe attached solder is inserted in the hole and anchor, it is held in anuprightposition by reason of the solder fitting the anchor more celain hole as heretofore. e

My mventlon. therefore, cons sts in a me..-

clos'ely than the pin itself tyouldtit the perchine for attaching solder to the ends of pins as a preliminary product to be used n the manufacture of artificial teeth, the same comprising mechanism for mechanically operating uponpms and solder to cause them to be mechanically connected'in pairs- 1 Q;-.

by they may be handled as a unit, the inyention embodied in said mechanism heingfully described hereinafter and more particularly pointed out inthe claims.

Rotter-ring to the drawings; l'is a we tioal sectional View of a machine embodying my invention, taken on line 11 of F ig. 4; I

Fig. 2 is afvertical' section of the same taken,

j on line 2%2 50f Fig-.1; Fig. 3; is. a frontjvie'yy of the main portion of the machine With por tlons broken away; Fig. 4 is a horizontal sec:

tionalfviewot' myimproved machine taken n i .9 Fi igs a ho iz ntal sect onal View of t e sa ne taken on line-5:5 0t Fig. 3;Fig; (Sis a erticalsection ofth same showmg the meanstorfeeding the Fig; 9 1s averticelxsectional of thesame showing the means for forcing the in down into the prepared solderfor mee anically uniting them; F-igglO is an enlargedvertical sect na V e he hsthe e m a y pmg of the solder by the m ss in Fig. 7; F g. 11 is an enlarged vertical sectional View Showing the pin end mechanie ally attached to th sold by h f 4 7 1. r i ll and 12 a per pe t ve iew e h the pin w t a the solder attached as a finished product of the machine.

' The ta e or mi d :irhm 0f h m hh h ind eht d. at 2 an may b of any sh hh hstruction. 3 is an upright trame securedtothe'table and having bearings for shafts 4 and 13, the former for operating the dies and pioneer nd the l t r for e d iv s ng Ae' pright gu e po t 6 shlsh l ed to the table-andglies in thesame Vertical nleh'e'a he sha t 4. which is l o iohmelhd n 2 1 upperend as shown in Fig. 1. A verca ly h precah ehe d 8 suided .11 01 th upright res 6, nd. is-hhldeg i s rota of he head 8 i -pro ide Wi h r nsv r s d 7 and nwhich iol ne ed an ce tri 5 11 he ndot h shaf has Shown Figsand Byt s me ns e a o o n ledon sha t JP-rand held i 'pl by a hu 21 I se med-t0 s i s t-r S cure to, g 18 pl l n 1 Wh1ch m shes with, we drives a largegee .1 harins ecured to im pini n 1.6 i i Thes gea s and 6 e at A 111 nd .95 the on y a Spl eh The 1 1 1 6 P fiQh loo.

The s aft 4 ecei s mhtiehfrem. b t p l y thmush shahand. sP- ed l a i 1 mg as fo ows- TQ shaf this s r d Pi io Y by thrust screws 11.

I solder Sand the latter for-feeding pinsP idlers loosely journaled on drive shaft 13 The-pinion 16 meshes with a larger gear 20 which 'is secured tightly to and drives shaft 4.

By these means the head 8 isreciprocated at I a moderate speed from the rapidly rotated.

pulley and whereby greater power maybe exerted than would be directly available from the primary source of power (not shown).

.The reciprocating headS is provided with a die plunger 9' and a hammer 10 whose lon-- gitudina-l 1 positions on end to endto the lower female dies 47 arranged on the turret 23. I i The turret 23 is journaled upon the stud G and comprises a disehaving a hub 24: pro- 'V1Cll11g an extended bearing surface. This turret held against downward thrust by resting upon an annular collar 6 of the post 6. The'turret" is prevented from rising by ranged tubular guides 21 the lower endof the spline 6 and. the guide tubes'21' and 22 which extend down close to the upper surface thereof. The axial lines of allof the parts 9 10, 21 and 22 have the same radial distance from the center of the post 6 andv similarly all of the female dies 47 arranged in the turret'have their axialcenters equidistant radially from-the center ofthepost and this radial'distance is identical with the radial distance of the parts 9, 10, 21 and 22,aforesaid. .Moreover the female dies 47 are four in number and are arat 90 apart and similarly the die 9, the hammer 10, and the magazine and 22 forthe solder and pins are also arranged at 90 apart; and

plunger therefore, it will be apparent that the die parts l7 on the turret are adapted for inter changeablealinement and coaction with each of theother parts 9, 10,21 and 22, when the turret is intermittently rotated. In this manner, a solder cylinder 01'' cartridge S is fed from solder guide tube '21 into one of the female dies 47 6) justaboutfilling itsupper part 51 and is thereafter moved under die plunger 9 (Figs; 7 and 10), where it is somewhat shaped to receive the pin; it

is then moved under the pin guide '22 to re-.

'ceive a pin P (Fig. 8), and finally is moved under the hammer 1'0v bywhich the pin'is driven down to finish shaping the solder by flanging the same about the endof the pin shank (Figs; 9 and 11). It will also be understood that this same series of operations are simultaneously going on with each of the four female dies 47 of the turret, though these four kinds of actions are at any moment distributed over the four dies-47. This means that during normal. operation, for everyre- "ci3rocation aofthe head 8, a complete pin wlth solder attached is discharged; though union, fourreciprocations of the head is necessary. I l

, Referring more employed The die plunger 9 is provided as a matter offact, to actually complete the particularly to the dies with an end which enters the female'die i andspreads the upper end'of the solder into more or less amushroom formation (Fig.

10), it being UIIdGIStOQd -th'iLtathQ solder cartridge orcylinder Sftightly fits 'thewvaist or narrowest diameter of the said female die and thereby assisted by the stationary'cam part 49' resists downwardmovement. during the mushrooming of the same. The female die 47 fits a bored recess in the upper'part of the turret and is clamped therein by clamping screw 52. It is counter-bored above at 51* to a diameter slightly greater than the waist diameter and also enlarged'at the bottom at 51. The bottom-of the-upper counter-bore 51'constitutesan annular inclined shoulder 58/ 'lliejjantil die member 48 has a clownwardly [extending stem 49" passing through and belo'w"the turret and also has a collar 50 sliding within the lower counter bofre 51 and confining the downward limits of move+ ment of the anvil die member as a whole. This collar 50. sustains the anvildie L8 in its lowermost position"; In 1 Fig. 7, the anvil member 48 is shownas not fully down but be- "fore securing the results indicated in Fig. 11, it will be depressed to the lowermost position.

as shown in Figs. 8 and 9, whei'eat the anvil die receives the downward thrust on the solder. 7

I When the pin Phas been forced down into mechanical union with the solder cartridge v S, as shown in 'l igsttl' and11', it will be necessary to reverse the movementsof the anvil die to eject the pin with attached solder and this is accomplished by the ejector arm- 54 fastened by screw 55 to thereciprocating head 8; said arm having an inward end below the anvil die 48 and. fitted with an adjustable lifting screw 57 by which the die maybe forced upward to the desired eistent when ejectingthe vconnected pinand solder (Fig. 12) and assuming the position indicatedvin Fig. '1.- The upward movement of the head and ejector 56 has twice the upward movement necessary to operate the anvil die and consequently it is only on the last or ris ing quarter o causes the anvil die to be fully lifted for ejecting the pin 'witlrattachcd solder. As

the turret is given another 90 rotation the ejector is lowered allowing the anvil die 48 to drop down in the female die .7 suite each reciprocation which i ciently'to permit it to pass under the magazinetube2]. and to receive another solder the feeding action.

cartridge Thereafter the operations explained are repeated.

In the case of feeding the pins P from magazine tube22 into the female die 47' beneath it (Fig. 8), the head of the'pin must remain extended above the turret surface to permit the pin to he drivenby hammer 10 down into'thesolder Sas in Figs; 9

and 11. These pins P, are :ted downward through themagazine tube which extend down to the upper surface of the turret head.

The lower end oi the magazine tube122 is slotted transversely and fitted with a reciprocable cut-0E 41 which isljprOvidedl with a' vertlcal aperture 42 of the same di-aineten as the hole in magazine tube and adapted to its motion being connected with a head 43 1 alinement with each ieinale die47l The tur-,

4o r v .a time into the the and all the rest are held having a horizontal rod 44 sliding in a guide 4% onthe bracket 36 and in which a coil spring 45, surrounding the rod, normallyi' orces the head toward thefperimeter of the turret. Theturret18 is provided on its perimeter, at apart, withV notches-46 into Whieha V or knive edge on the head 4,3 enters (Fig. 4) to permit of a slight end movement tothe cut-oil tl. This cut-off action takes place with each 90 movement of the'turret, there being, four V notches, respectively, in radial rot and notches 4:6, thereof act as cam devices for reciprocating the Cut-otf 41in times relation to, the movements of theturrct and its (lies. By thcse means a single pin is fedat in the magazine and the feeding of the pins is auton'iatieally done under' control by the movements of the turret. Theunder part of the magazine tube. 22 is. slottedjat 53 transversely to the direction of'themo'vements of the cut-off, so that the projecting headend of the pin Pmay be moved from, under the tube, as the turret revolves, to transferthe pin to a position under the hammer 10 (Fig.9). I Hereto or e, I have referred to the turret being given intermittent rotary 'noveinents of 90? each, and I will now describe the means for accomplishing these movements, Referring to Figs. 2, 3 and 5, the hub 24 of the turret has its perimeter provided with four equally spaced notches 250i ratchet form (Fig. 5). Surrounding thishub and cen i F plunger d e'to the female die h, produc ng tered upon the collar 6 is a sleeve 28, which is p 1 r I at that time a frictional union between the with a detent 39 inwardly spri l g provided pressed by spring 40, so as to engage ratchet grooves 250i? the turret huh, The

sleeve 28 is given a rotaryo'scillationhy a link v v u r a novel and useful construction whleh em- 26 having one end hinged to the-sleeve at The height of this cut-oil" 4 1 is the same.

27 and havingits other end jointed at 31 to a pivoted lever 32. This lever 32 is fulcrumed or pivoted-to the bracket 36 at33 and has a heelor short arm 37 whichis depressed by'the l'ug"3'8 secured "to the reciprocating head 8"aforesaid. To keep the lug 38 and heel 37' 0t" lever 32 in c0ntact,"1 provide a'rod 3 1 hinged at one endto the lever and having the 'otherend guided through a hole in lug'ZB P on the bracket'SG, said rod surroundedby a coil spring 85 operating to continually maintain the lever in operative relationwith the lug of head 8. It will now'be understood that the spring normally causes thelever 32, "link 26 and sleeve 28 to ,assume the relative positions shown in thedrawings when the head 8 is inits upper position. The rotary movement isv given to the turret while the head 8 is rising and hence the motive power f0r-providing therotary movement is the spring 35. hen the head 8 is descending the turret must he held stationary and this is accomplished bythe "spring actuated head 43' engaging the V notches in the turret, as before explained. Thefli-nk-26 is curved to hug the perimeter ofthe turret hub 24 and 25 of the hub in succession tolock theturret againstspinning on the completion of a propolling-movement induced by the action of directly in line with the turret dies 47. The

downward movement of the head 8 has no effecton this feeding meansother than to put thexspring35 under compression simulta neously with the bringing or the link and sleeve into initial lieeding positions.

9 In the use of my improved machine, the pins and solder cartridges are made in separateniachin'es andsupplied to the magazine tubes'22 and 21 in any'fsuitahle manner (not shown). As such magazine charging and feeding means are well known, there will he need ofno descriptlon thereof here, more especially asthese improvements have to -'do only with the direct mechanical connection of these articles in pairs, as shown in Fig. '12. j

. .As illustrated, both in Figs. lland' 12, the solder has beenpressed-or drawn into cup shape with-- the annular upward flange S tightly clamped to the lower end of the pin shank, when the pin driven down'by the hammer 10 has beencaused to act as a male pin and solder which is not disturbed there aft r. I

It will'now be apparent that I have dev sed has a locking lug 29which enters the grooves tent-1y rotating the turret with a step by step bodies the features of advantage enumerated as desirable, and while I have 111 the present instance shown and described the preferred embodiment thereof which has been found in practice to givesatisfactory and reliable results, it is'to be understood that I'do not re strict myself to the details, as the same are susceptible of modification in various particulars without departing from the spirit or scopeof the invention:

Having no wdescribed my nvention, what I claim asnew and desire to secureby Letters Patent is; i

1. In a machine of the character stated,the combination of a reciprocating head, with a turret rotatable in a plane rightangles to the direction of reci', )rocation of the'head, a

iii

:female dies. on theturret when adjusted to positions intermediate of the plunger die and hammer of the reciprocating head, and

wherein further, the female dies are spaced 90? apart on the turret and'at the same radial distance thereon, the plunger die and hammer are spaced 180 apart relatively to the axis of the turret, and the magazine feeding means comprise separate feeding tubes'spaced 180 apart and respectively alternate with the plunger die and hammer.

2. The invention according to" claim 1,

wherein also, the magazinefeeding means includes a relatively stationary tubular guide extending down close tothe surface of the turret and through which ill'tlClGS may pass by gravity, said guide provided with a cutoff means for the articles, and means for'opcrating the cut-off in timed relation to the movement of the turret.

3. In a machine of the character stated, the combination of a reciprocating head, with a turret rotatable n a plane at right angles to the directionof reciprocation of thehead, a j plurality of female dies carried by the turret,

a. male plunger die and a hammer secured to and movable with the head and spaced at a greater di'stance-apart than the dies on the turret, and magazine feeding means inde pendent of the turret and spaced circumferlit) entially to the turret intermediate ofthe plunger and hammer dies for feeding'different articles to be united respectively to" the female dies on the turret when adjusted to 3 positions intermediate of the plunger die and hammer of the reciprocating ,head, and

wherein further, means controlled by the reciprocating head are provided forintermitproachine movement in the same direction, whereby the Y turret is stationary when thehead is apit, and rotating when the head is I h l moving away from 1t.

, 4. In a machine of the character stated,t hecombination of a reciprocating head,'witha turret rotatable in a plane right, angles to the direction of reciprocationof the head, a plurality offemale dies carried by the turret,

a male plunger die andfa: hammer secured to and movable with the head and spaced at a greater distance apart than the dies on the turret, and magazine feeding'means independent of the turret and spaced circumfer= ventially to the turret intermediate of the wherein further, devices comprising, spring, actuated power means for positively rotating the turret, and spring compressing means actuated by the reciprocating head for putting the spring actuated power means in condition for action are provided for intermittently rotatin the turret; g,

5. In a machine of the character stated, the combination (of a reciprocating head, with a turret rotatable in a'plane at right angles to the direction of reciprocation of the head, a plurality of female dies carried by the turret, a male plunger die and a hammer secured to and movable with the head and spaced at a greater distance apartthan' the dies on the turret, and magazine feeding meansindependent of the turretand'spaced circumfer ferent articlesto be united respectively tothe female dies on the turret'when adjusted to positionsintermediate of the plunger die and hammer of the reciprocating head, and wherein further, devices comprising spring actuated power) means for positively-rotating the turret, andspring compressing means actuated by the reciprocating head for putting the spring actuated power means in condition for action are provided for intermittently rotating the turret, and wherein also locking means are'provided for locking the turret against movement during the time the till] llii' head is compressing the spring actuated power means. p 6. In a machine of the character stated, the combination of a reciprocating head, with'a turret rotatable in' a plane at right angles to the direction of reciprocation of the headfa plurality of female dies carried by'the turret,

[a male plunger die and a hammer secured to and movable'withthehead and. spaced at a greater distance apart than thejdies on the turret, and magazine feeding means independent of the'turretand spaced circumferliiu 'e'ntia'lly to the turret intermediate of the 593%! v ferent articles to be united respectively to the plunger and hammer dies for feedingidiffemale dies on the turret-when adjusted .to

positions intermediateof the plunger die and hammer of the reciprocating head, and

wherein further, the female dies on the turret are each formed with a contracted waist di-' ameter bounded on the top by an annular shoulder and slightlyenlarged entrance di I for ejecting the finished article. v

7. In a machine of the character stated, the.

combination of a reciprocating head, witha turret rotatable in a" plane at right angles to the direction of reciprocation of the head, a plurality of female dies carried by the turret, a male plunger die and a hammer secured to and movable with the head, and spaced at a l greater distance apart than the dies on the turret, and magazine feeding means independent of the turret and spaced circumferentially to the turret intermediate of the lun 'er and hammer dies for feedin dif-' P c e i'erent articles to be united respectively to the female dies on the turret when adjusted to ositions intermediate of the lun 'er die and hammer of the; reciprocating head, and wherein further, means are provided for int-l termittently rotating the turret under the relatively fixed magazine feeding means for the articles to be acted upon bythe dies,vand

, the female dies in the turret are each formed with a contracted waist diameter bounded on v the top with an annular shoulder and a slightly enlarged entrance diameter thedepth of the latter being equal to the vertical depth of Y the article to be received from the magazine:

feeding means, wherebythe'turret and article 111 the die may move past the magazine-feed ing means and'the turret constitute a cut-oif J 'therefonf I a V 8. In a machine of the character stated, the

combination of a reciprocating headfwith a turret rotatable in a plane at right, angles to' the direction of reciprocation of the head, a plurality of female dies carried by the turret,

a male lun er dieand a hammer secured to and movable with the head spaced at a greaterdistance apart "than the dies on the turret, and magaz ne feedlng means ,inde-r pendent. ofithe turret and spaced circumferentially. to the turret intermediate of the "plunger'and hammer dies forfeeding different articles to be united respectively to the female dies on the turret when adjusted to positions intermediate of the plungerdie and hammer of the reciprocating head, and

wherein further, the magazine feeding means includesa relatively stationary tubular guide a extending down close to the surface of the turret and through which articles may pass 9.

by gravity, said guide p'rovided with acutolf means forthe articles a. little above the lower end of the tubular guide and the bottom'of said guide formed witha transverse slot, and means for operating the cut-off 1n timed relation, tothe movement of the turret.

, 9,. In a machine of the character stated, the

combination of a bed frame having an upright stud, with a turret journaled on thestud and having dies movable about said stud, a reciprocating head guided upon said stud,

power devices for reciprocating ithe head, 7

means for intermittently rotating the turret in alternate timesrelation with the reciprocations of the head, separate operative means onthehead in diametric relation for coacting witli.separatedies on theturret and the articles therein, and feeding means for delivering articles to the dies on the turret at times intermediateofthe action of the operating means on the head.

10. 1he invention according to claim 9,

wherein further, means are provided for;

holding the turret againstrotation head is moving toward it.

11. The herein described method of securing solder t0 the end of alpin'which consists in cupping the end of amass of solder while when the held in suitable dies, thereafter driving 1a pin into the cupped end of the solder and forcing? (it through the dies whereby-the cupped end of the solder is drawn into cylindrical -form tightly upon and about the end of the pin, and finally releasing the pin and solder from the dies while in their permanently attached association, a v

' In testimony ofwhichinvention,Ihereunto ALBERT nfieIBsoN.

set my hand. I 

